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ATOMIC AND MOLECULAR SPECTRA OF XENON, KRYPTON, AND ARGON IN THE VACUUM ULTRAVIOLET.

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/14803

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Title: ATOMIC AND MOLECULAR SPECTRA OF XENON, KRYPTON, AND ARGON IN THE VACUUM ULTRAVIOLET.
Creators: Wilkinson, P. G.; Hulburt, E. O.
Issue Date: 1965
Abstract: Lifetimes of the lowest $^{1}P^{0}_{1}$ and $^{3}P^{0}_{1}$ states of Xe and Kr have been measured by a photoabsorption technique. The results give for Kr: $\tau(^{1}P^{0}_{1}) = 4.55\cdot 10^{-9}$ sec and $\tau(^{3}P_{1}^{0}) = 4.38 \cdot 10^{-9}$ sec; for Xe. $\tau(^{1}P^{0}_{1}) = 2.80 \cdot 10^{-9}$ sec and $\tau(^{3}P^{0}_{1}) = 3.74 \cdot 10^{-9}$ sec. The lifetimes of the metastable $^{3}P^{0}_{0}$ and $^{3}P^{0}_{2}$ states, while not explicitly measured here, are shown to be longer than the non-metastable states and play important roles in the continuous emission spectra of rare gas molecules in the vacuum ultraviolet. Laboratory measurements of the emission intensity $(I_{em})$ of the argon molecular continuum as a function of pressure $(PA_{r})$ show that $I_{em}^{1/2}/PA_{r}$ is a linear function of argon pressure. A mechanism is proposed which accounts for the experimental observations. Sponsored jointly by the Office of Naval Research and the National Science Foundation.
URI: http://hdl.handle.net/1811/14803
Other Identifiers: 1965-I-1
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